@article{MV_1968_20_3_a17,
     author = {M. D. Radoj\v{c}i\'c},
     title = {On the embedding of universal algebras in groupoids holding the law $XY\ast ZU\ast\ast = XZ\ast YU\ast\ast$},
     journal = {Matemati\v{c}ki vesnik},
     pages = {353 },
     publisher = {mathdoc},
     volume = {20},
     number = {3},
     year = {1968},
     url = {http://geodesic.mathdoc.fr/item/MV_1968_20_3_a17/}
}